Research on Orthogonal Optimization of Ball Spinning Process Parameters of AISI-304 Stainless Steel Thin-walled Tube

Aiming at a series of problems caused by improper ball spinning parameters of small-diameter stainless steel thin-walled tubes, the AISI-304 stainless steel tube with φ6 mm×0.5 mm×10 mm was selected as the research object, and its finite element model was established. The forming process was simulated by Abaqus software, and the effects of different process parameters (thinning amount, feed ratio and spinning angle) on its equivalent stress and uniform plastic strain were analyzed.Finally, the orthogonal test method was used to optimize the process parameters.The results show that the optimized process parameter combination is thinning amount of 0.2 mm, feed ratio of 0.05 mm/r, and spinning angle of 25°. Under this combination of process parameters, the equivalent stress value and uniform plastic strain value of AISI-304 stainless steel pipe reach the optimum value, which are 642.22 MPa and 0.06, respectively.